I learnt the following relations the hard way 10 years ago when trying to
backup
a rather tiny amount of data, went through the computation again three years
ago. Still I had to re-do the computation this morning when trying to pull a
final full backup from my old MacBook. Posting here for future reference:
Note 1: Some numbers like 10BASE-T included only for historic reference.
Note 2: Excluded the Alice DSL uplink speed - if included the left-hand chart
would no longer be particularly helpful or readable...